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$CSTL All transactions

CASTLE BIOSCIENCES INC

▼ SELL 10b5-1 Plan

$ Value

$30K

Shares

1,339

Price

$22

Filed

Oct 23

Insider

Name

MAETZOLD DEREK J

Title

Pres. & Chief Exec. Officer

CIK

0001239501

Roles

Director Officer

Transaction Details

Transaction Date

2025-10-20

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

62,988

Footnotes

These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on May 8, 2025. | This transaction was executed in multiple trades at prices ranging from $22.290 to $22.615, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. | Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries. | Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries. | Held by The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk of which the Reporting Person is the trustee and his child is the beneficiary. | Held by The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold of which the Reporting Person is the trustee and his child is the beneficiary. | Held by The Maetzold 2018 Remainder Trust FBO John Derek Maetzold of which the Reporting Person is the trustee and his child is the beneficiary. | Held by The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold of which the Reporting Person is the trustee and his child is the beneficiary. | Held by DJM Grantor Retained Annuity Trust No. 5 of which the Reporting Person is the trustee and beneficiary. | Held by DJM Grantor Retained Annuity Trust No. 6 of which the Reporting Person is the trustee and the beneficiaries are The Maetzold 2018 Remainder Trust FBO John Derek Maetzold, The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk, The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold and The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold. | Held by DJM Grantor Retained Annuity Trust No. 7 of which the Reporting Person is the trustee and beneficiary.

Filing Info

Accession No.

0001628280-25-045995

Form Type

4

Issuer CIK

0001447362

MAETZOLD DEREK J's History

Date Ticker Type Value
2026-04-21 CSTL M $1K
2026-04-21 CSTL $14K
2026-04-21 CSTL $34K
2026-04-21 CSTL $29K
2026-04-21 CSTL $7K
2026-04-21 CSTL $7K
2026-04-21 CSTL $7K
2026-04-21 CSTL $7K
2026-04-21 CSTL M $0
2026-04-06 CSTL M $15K

Other Insiders at CSTL (90d)

Insider Bought Sold Last
MAETZOLD DEREK J
Pres. & Chief Exec. Officer
$3.0M 2026-04-21
Cole G Bradley $211K 2026-03-05
Stokes Frank
Chief Financial Officer
$360K 2026-03-05
Juvenal Tobin W
Chief Commercial Officer
$527K 2026-03-12
Oelschlager Kristen M
Chief Operating Officer
2026-03-04
Cotton Rodney 2026-03-26